Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
This study aimed to develop a method, followed by gas chromatography-mass spectrometry, for detecting 37 pesticides in () and investigating the decrease in the matrix-induced enhancement effect. The influence of QuEChERS extraction and matrix solid-phase dispersion (MSPD) on the recovery and matrix effect (ME) was compared. extraction and matrix solid-phase dispersion (MSPD) on the recovery and matrix effect (ME) was compared to decrease the ME. The cleanup sorbents, volume and type of solvent, and treatment time were optimized. The accuracy (as recovery), precision (as relative standard deviation, RSD), linearity, limit of quantitation, and limit of detection were determined. The recoveries at the three levels using mixed standard solution ranged between 76% and 120% with RSD ≤15%, and 76% and 120% with RSD ≤11% for MSPD and QuEChERS extraction, respectively. The results suggested that the ME for 21 pesticides was in the range of 80%-120% after MSPD and 15% after QuEChERS extraction. QuEChERS extraction was simpler and faster than MSPD. This methodology was applied in the analysis of 27 samples; phorate was most frequently detected (63.0% of the sample).
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8677409 | PMC |
| http://dx.doi.org/10.1155/2021/8854025 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Tandem Mass Spectrometric Analysis of Persistence and Kinetics of Tetraniliprole and its Metabolite (BCS-CQ 63359) in Pigeon Pea.
Bull Environ Contam Toxicol
September 2025
Pesticide Residue Analysis Laboratory, Department of Entomology, Punjab Agricultural University, Ludhiana, India.
QuEChERS method of extraction followed by detection with Liquid Chromatograph Mass spectrometry was carried out to determine persistence of tetraniliprole and its metabolite in pigeon pea. The mean recovery of tetraniliprole and its metabolite BCS-CQ 63359 in immature and mature pods, seeds and grains of pigeon pea and soil were in the range of 76.38-105.
View Article and Find Full Text PDFSimultaneous detection and quantification of free phenol and three structural isomers of cresol in human blood using gas chromatography-triple quadrupole mass spectrometry (GC-MS/MS) and their medical reference value ranges.
J Anal Toxicol
September 2025
Department of Legal Medicine, College of Basic Medical Sciences, Inner Mongolia Medical University, Hohhot, China.
Free phenol and cresol isomers in human samples have drawn interest, particularly in the field of forensic toxicology. In this study, a simultaneous analytical method for the detection of unchanged phenol and three structural isomers of cresol in human blood was developed using GC-MS/MS. This method was applied to authentic human heart and peripheral vein blood samples obtained from a fatal intoxication case involving accidental exposure to liquified phenol containing cresol isomers.
View Article and Find Full Text PDFPesticide residues in fruits and vegetables are becoming a serious issue. These residues can affect the quality of agricultural products and people's health. Therefore， it has become crucial to effectively monitor and control pesticide residues in the food safety field.
View Article and Find Full Text PDFA modified QuEChERS method for simultaneous determination of 73 pesticides, 23 PCBs and 16 PAHs in wheat by GC-MS/MS.
Anal Methods
September 2025
Chinese Academy of Quality and Inspection &Testing, Beijing 100176, China.
In this study, a modified QuEChERS method for the simultaneous determination of 73 pesticides, 23 PCBs and 16 PAHs in wheat was developed by gas chromatography-triple quadrupole tandem mass spectrometry (GC-MS/MS). The sample was first hydrated with 4 mL of ultrapure water, extracted with 10 mL of acetone-hexane (1 : 1, V:V), and then cleaned up with a mixture of 50 mg of PSA, 150 mg of C18, and 400 mg of anhydrous MgSO. Under the optimized conditions, the samples were analyzed by GC-MS/MS for quantitative analysis using the matrix-matched external standard method.
View Article and Find Full Text PDFInnovative advanced processes for treatment of multiple emerging pesticides from water: Performance, statistical design, QuEChERS-GC-MS/MS sensitive identification and degradation mechanism.
Water Res
August 2025
LASIRE, Equipe Physico-Chimie de l'Environnement, CNRS UMR 8516, Université de Lille, Sciences et Technologies, Villeneuve d'Ascq Cedex 59655, France; Université d'Artois, IUT de Béthune, 62400, Béthune, France. Electronic address:
The objective of this study is the degradation of a mixture of three pesticides from three distinct families: Metalaxyl (fungicide), Metolachlor (herbicide), and Diazinon (organophosphate Insecticide). In this work, the enhanced advanced oxidation process known as "Photo-Fenton" was first optimized, and the mineralization step was determined. The experimental design and response surface "three-parameter Doehlert design" were employed as the experimental methodology to modeling and optimizing the experimental parameters.
View Article and Find Full Text PDF